*2.8. Antioxidant Activity of CS/PVOH/HNT and CS/PVOH/TO@HNT Films*

Antioxidant activity in active food packaging has a key role to extend the shelf-life of food products. Especially for such edible coatings enhances nutritional and aesthetic quality aspects of food without affecting its integrity.

The calculated % antioxidant activity values of all CS/PVOH/HNT and CS/PVOH/TO@HNT films as well as pure CS/PVOH film are obtained in Table 3.

**Table 3.** Antioxidant activity values of pure CS/PVOH and all CS/PVOH/HNT, CS/PVOH/TO@HNT films.


<sup>1</sup> DPPH assey.

As it is observed no significant antioxidant activity is obtained for pure CS/PVOH and CS/PVOH/HNT films. For CS/PVOH/TO@HNT films antioxidant activity is increased as the TO@HNT nominal content is increased. The highest antioxidant activity value is obtained for CS/PVOH/15TO@HNT film.
